41 | Add to Reading ListSource URL: www.wrds.uwyo.eduLanguage: English - Date: 2012-04-06 15:36:29
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42 | Add to Reading ListSource URL: digital.library.okstate.eduLanguage: English - Date: 2006-06-19 11:44:44
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43 | Add to Reading ListSource URL: digital.library.okstate.eduLanguage: English - Date: 2005-05-25 16:24:31
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44 | Add to Reading ListSource URL: digital.library.okstate.eduLanguage: English - Date: 2006-06-19 11:44:45
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45 | Add to Reading ListSource URL: digital.library.okstate.eduLanguage: English - Date: 2006-05-20 18:51:53
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46 | Add to Reading ListSource URL: www.gpo.govLanguage: English - Date: 2013-01-16 13:40:27
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47 | Add to Reading ListSource URL: digital.library.okstate.eduLanguage: English - Date: 2006-05-20 18:55:02
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48 | Add to Reading ListSource URL: www.nps.govLanguage: English - Date: 2014-03-05 17:48:00
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49 | Add to Reading ListSource URL: www.nps.govLanguage: English - Date: 2013-10-18 12:06:18
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50 | Add to Reading ListSource URL: www.fs.fed.usLanguage: English - Date: 2013-03-28 17:19:22
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